scare someone/something away/off
phrasal verb with scare verb [ I or T ] uk/skeər/ us/sker/
C1 把…吓跑
to make a person or an animal so frightened that he, she, or it goes away
Don't make too much noise or you'll scare away the birds. 别弄那么大声音，会把鸟儿吓跑的。
She scared off her attacker by screaming. 她大声叫喊，把袭击她的人吓跑了。